Portable drill



P. G. WEISS.

PORTABLE DRILL. APPLICATION FILED AUG. 15, 1918.

1,333,743. Patented Mar. 16, 1920.

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also be used as a port-able lifting PAUL G. WEISS, OF INDIANAPOLIS, INDIANA.

PORTABLE DRILL.

Application filed August 15.

Ton lllzom if"NU/ 011170711 Be it known .that'I, PAUL G. 'Wmss, a citizen of the United States, residing. at. Indianapolis, in the county of Marion and .State' of Indiana, have invented a new and useful Portable Drill, of which the following is a specification.

It is the object of my invention to provide a portable drill press. which can readily be used in any position, even in cramped quarters, and can be held inIposit-ion and fed with a minimum effort; and which can 'ack.

The accompanying drawing i lustrates my invention: Figure 1 is a vertical section through a portable drill embodying my invent-ion, with the drill raised and substantially level: Fig. 2 is an elevation of such post extension 12 is a slide portable drill from the oppositeside, with the drill lowered and slanting downward; Fig. 3 is a partial sectional view of the back-leg, removed; and Fig. l is a section on the line 44 of Fig. 1.

The central post 10 is. hollow, and at its lower 'endhas a swivel mounting on a footpiece 11. Slidably mounted in the hollow post 10 is a post extension 12, which has rack teeth 13 which cooperate with a. pinion 14 on a transverse shaft 15 suitably mounted in the hollow post 10and provided with an operatin' wheel or handle 16; the shaft 15 preferab y has a ratchet wheel 17 with which cooperates a dog 18, whereby the post extension 12 may be held elevated in any desired position. Pivotally mounted on a clamping bolt 19' at the upper end of'the late 19, which carries'a slide block 20 Slide. le on the slide plate alongslideways '21. The slide block 20 carries any suita le power-operated motor 22, such as an, electric or pneumatic motor, for operatingthe drill 23 or other tool, WhlCll is suitably carried by the motor shaft in any suitable chuck 24. A feed lever 25 is .dle 26 at the other.

point the lever .26 has a fulcrum pin 27,

pivoted to one end of the slide block 20, be'- mg provided with a suitable operating han- At an intermediate which is held substantially stationary when it is desired to feed the slide block ,20 and drill 23 forward. Preferably the fulcrum pin 27 is provided with a forwardly extend mg hook 28 which may be attached by a chain 29 to the work being operated on by the drill 23, so that by manipulation of the Specification of Letters Patent. Patented )Ial. 16, 1920.

1918. Serial No. 249,927.

lever 25 the reaction of the feed movement is against the work itself; but I also preferably provide alink 30 extending from the fulcrum pin 27 to an upward projection 31 from the slide plate 19, for use especiallywhen the chain 29 cannot be used. It'is sometimes necessar to provide an additional brace or bac -leg for the slide plate 19gespecially when the chain 29 cannot be used, and therefore I mount on the pivot pin 32 at the rear of the slide plate a bifurcated back-leg 33, thean'gle between the two prongs of. which is --ad ustable about the pivot 34. The two prongs of the bifurcated leg 33 are also adjustable in length, by the usual telescoping. arrangement indicated in n operation, the drill may be put in any position, on any kind of a sup ort, to drill upward, downward, horizontally, or in any oblique direction. If the foot piece 11 can be set on an support, that may be done, and the post 10 at justed in such foot piece as desired, the, 0st extension 12 raised to the desired heig t in the-post 10, the slide plate 19 adjusted on the post'extensio'n 12 to the desired position, the chain 29 fastened to the work or other int to be pulled against if any or the bac -leg33 set indesired position so as to be pushed against, the motor '22'set into-operation, and the drill fed forward by the desired operation of the lever .25. Sometimes, especially when no suitable will be readily apparent. 'In case it is de-- sired to use the drill as a jack, the motor 22 ma beremoved, and the slide block 20 set un er the thing to be lifted; whereupon by proper manipulation of the wheel 26 the desired lifting may be obtained. I claim as my invention:

1. A portable drill, comprising a foot piece, an extensible post swiveled in said oot piece, a slide late pivotally mounted. on the upper end of said extensible post on an axis transverse tothe post, a slide block slidable along said slide plate, a poweroperated motor mounted on said slide block so as to be moved therewith, a feed lever connected to said slide block, and means for providing a fulcrum for said feed lever.

A portable drill, comprising an extensible post, a slide plate pivotally mounted on the upper end of said extensible post on an axis transverse to the post, a slide block slidable along said slide plate, a power-o erated motor mounted on said slide bloc so as to be moved therewith, a feed lever connected to said slide block, and means for providing a fulcrum for said feed lever.

3. A portable drill, comprising an extensible post, a slide plate pivotally mounted on .the upper end of said extensible post on an axis transverse to the post, a slide block slidable along said slide plate, a power-operated motor removably' mounted on said'slide block so as to be moved therewith, a feed lever connected to said slide block, and means for providing a fulcrum for said feed lever.

I. A portable drill, comprising an extensible post, a slide plate pivotally mounted on the upper end of said extensible post on an axis transverse to the post, aslide block slidable alon'g saidslide plate, a power-operated motor mounted on said slide block so as to be moved therewith,:.a feed lever connected to said slide block, and means for connecting a. fulcrum point on said lever to the work to be drilled so as to provide a support for said fulcrum.

ble post, a'slide plate pivotally mounted on the upper end of said extensible post on an axis transverse to the post, a slide block slidable along said slide plate, a power-operated motor mounted on said slide block so as to be moved therewith, a feed lever conrtable drill, comprising an extensi nected to said slide block, andmeans sup ported on said slide plate for providing a fulcrum support for said feed lever.

6. A portable drill, comprising an extensible post, a slide fplate pivotally mounted on the upper end 0 said extensible post on an axis transverse to the post, a slide bloc-k slidable along said slide plate, a power-operated motor mounted on said slide block so as to vbe moved-therewith, a feed lever connected to said slide block, means for providing a fulcrum for said feed lever, and an extensible back leg pivotally connectible to said slide plate.

T. A portable drill, comprising an extensible post, a slide plate pivotally mounted on the upper end of said extensible post on an axis transverse to the post, a slide block slidable along said slide plate, a power-operated motor mounted on said slide block so as to be moved therewith, a feed lever connected to said slide block, means supported on said slide plate for providing a fulcrum support for said feed lever, and an extensible back leg pivotally connectible to said hand at Indianapolis, Indiana, this tenth day of August, A. D. one thousand nine hundred and eighteen.

PAUL G. WEISS. 

